
In "The Coworker," bestselling author Freida McFadden delivers a twisted workplace thriller where turtles, revenge, and unreliable narrators collide. With 4.00 Goodreads rating and translations in 40+ languages, this page-turner will keep you questioning: who's the real office predator?
Freida McFadden is the #1 New York Times bestselling author of The Coworker, a gripping psychological thriller that explores workplace tension, secrets, and betrayal. Born May 1, 1980, McFadden is a Harvard-educated physician specializing in brain injury, bringing a unique medical perspective to her dark, twist-filled narratives. Her background in neuroscience informs the psychological depth and authenticity of her characters' motivations and unreliable perspectives.
McFadden's breakout novel The Housemaid (2022) became an international phenomenon, earning her the International Thriller Writers Award for best paperback and a Goodreads Choice Award. The book is being adapted into a major film by Lionsgate, starring Sydney Sweeney and Amanda Seyfried, with filming having begun in January 2025. Her subsequent thrillers, including The Housemaid's Secret and The Boyfriend, have solidified her reputation for delivering page-turning suspense with shocking twists.
Her novels have been translated into more than 45 languages and have sold millions of copies worldwide, making her one of the most dominant voices in contemporary psychological suspense.
The Coworker is a psychological thriller about Natalie Farrell, a successful sales representative at nutritional supplement company Vixed, who becomes the prime suspect when her odd coworker Dawn Schiff goes missing and is found dead. The dual-narrator story explores workplace toxicity, bullying, and revenge through multiple shocking twists that reveal nothing is as it seems. The two-part thriller features unreliable narrators and a twisted game of cat and mouse.
The Coworker is perfect for psychological thriller fans who enjoy fast-paced plots, unreliable narrators, and workplace drama. Readers who appreciate Freida McFadden's signature twisty style and those looking for "popcorn thrillers" with shocking revelations will find this engaging. This book also appeals to anyone interested in stories about toxic office dynamics, moral ambiguity, and characters with questionable ethics navigating complex revenge plots.
The Coworker is worth reading if you enjoy fast-paced psychological thrillers with unexpected twists, though it has mixed reviews. Most readers found it engaging and impossible to put down, rating it 3-4 stars, with particular praise for the plot twists and character development. However, some criticized the unrealistic ending and felt the resolution didn't match the buildup. The audiobook runs 8 hours 12 minutes, making it a quick, entertaining listen.
Freida McFadden is a #1 New York Times, USA Today, and Wall Street Journal bestselling author who practices medicine as a physician specializing in brain injury. She has written over 58 books, primarily psychological thrillers, including popular titles like The Housemaid series, Never Lie, and Want To Know A Secret. McFadden is known for her addictive, twist-filled narratives and her ability to create fast-paced stories that keep readers hooked despite mixed critical reception.
The Coworker features two main characters as dual narrators: Natalie Farrell, the beautiful, popular top sales representative at Vixed who is often cruel and morally questionable, and Dawn Schiff, the socially awkward accountant obsessed with turtles who is always at her desk at 8:45 a.m.. Supporting characters include Seth Hoffman, their boss, and Caleb. Both female leads serve as unreliable narrators whose perspectives shape the mystery and reveal the toxic workplace dynamics at the company.
Dawn Schiff disappears from work one morning, breaking her routine of always arriving at 8:45 a.m., which triggers concern and an anonymous phone call asking for help. The story suggests Dawn is murdered and all signs point to Natalie as the suspect. However, The Coworker contains a major twist: Dawn was never actually dead in the first place, revealing the entire situation was part of an elaborate revenge plot. This shocking revelation reframes the entire narrative and Dawn's motivations.
Turtles are Dawn Schiff's obsession throughout The Coworker and serve as a key character trait that defines her quirky, odd personality at Vixed. Multiple reviewers noted the excessive mentions of turtles became "incredibly grating" and wished they could count how many times the word appeared. One reviewer compared Dawn's turtle knowledge to a character from The Good Place with a frog collection. The turtle motif helps establish Dawn as an outsider and socially awkward individual in the workplace.
The Coworker takes place at Vixed, a nutritional supplement company where cutthroat competition and toxic workplace culture dominate. Natalie works as a top-performing sales representative constantly battling to stay on top in a male-dominated corporate environment, while Dawn works in accounting running numbers for the sales department. The office environment features workplace bullying, moral compromises, and employees willing to stop at nothing to impress boss Seth Hoffman. This setting creates the perfect backdrop for deception, lies, and ultimately murder.
The Coworker delivers multiple shocking twists that reviewers praised for catching them off guard. The biggest revelation is that Dawn was never actually dead, despite the entire investigation treating her disappearance as murder. Before Dawn's "death," it's revealed that Natalie had been sleeping with their boss Seth and falsifying company records, which Dawn threatened to expose. These twists transform the story from a straightforward murder mystery into a complex revenge plot where readers must reconsider everything they thought they knew about both characters.
The Coworker ranks as one of Freida McFadden's stronger releases, particularly compared to her more recent works, with readers rating it around 3.5-4 stars. One reviewer noted this book featured less naive main characters than McFadden's typical protagonists, making it more enjoyable. Compared to The Housemaid (3.5 stars), Want To Know A Secret (3.75 stars), and Never Lie (3 stars), The Coworker falls in the middle of her catalog. Fans appreciated returning to McFadden's earlier style with more complex, morally gray characters rather than "dumb" protagonists.
The Coworker faces criticism primarily for its unrealistic ending and implausible revenge plot despite an engaging buildup. Reviewers noted the resolution felt unsatisfying and questioned "what was the point of it all," nearly dropping ratings from 4 to 3 stars. The excessive use of turtle references became "incredibly grating" throughout the narrative. Additionally, Natalie's lack of remorse for her actions as a 30-year-old and her excuse of being "only 17" at the time of past misdeeds frustrated readers who found the meanness hard to overlook.
The Coworker explores toxic workplace culture, workplace bullying, and the lengths people go for professional ambition in male-dominated corporate environments. The novel examines moral ambiguity and ethical lines people cross when threatened, featuring characters who weaponize insecurities instead of supporting each other. Themes of revenge, deception, and the treatment of outsiders run throughout, with particular focus on how "soft, odd, and quietly resilient" individuals like Dawn get overlooked or mocked for being different. The story ultimately questions who the real victim is when everyone operates with questionable morals.
著者の声を通じて本を感じる
知識を魅力的で例が豊富な洞察に変換
キーアイデアを瞬時にキャプチャして素早く学習
楽しく魅力的な方法で本を楽しむ
toxic workplace relationships
office politics evolves into something far more sinister
extraordinary secrets
unpredictable plot twists
mastered the art of creating seemingly ordinary characters
『The Coworker』の核心的なアイデアを分かりやすいポイントに分解し、革新的なチームがどのように創造、協力、成長するかを理解します。
鮮やかなストーリーテリングを通じて『The Coworker』を体験し、イノベーションのレッスンを記憶に残り、応用できる瞬間に変えます。
何でも質問し、学習スタイルを選び、自分に本当に響くインサイトを一緒に作れます。

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Dawn Schiff has disappeared. Her cubicle neighbor Natalie becomes concerned after receiving a disturbing "Help me" phone call from Dawn's line at exactly 9:17 AM-a time when Dawn would normally be organizing her daily files, a routine she hadn't missed in seven years at Vixed, a growing vitamin supplement company. When Natalie reports this to their boss Seth, he dismisses her concerns with unusual casualness, suggesting Dawn will show up for their scheduled afternoon meeting. The tension escalates when Natalie discovers a small ceramic turtle figurine with what appears to be dried blood on her desk. Dawn's meticulous nature makes her absence particularly alarming-she's never been late and follows schedules with almost obsessive precision. When Dawn fails to appear for her meeting with Seth, Natalie checks Dawn's home, finding disturbing signs of a struggle-an uncorked bottle of Merlot, a shattered wine glass, overturned furniture, and something dark and viscous on the beige carpet. What begins as concern for a missing coworker quickly transforms into a complex mystery. Dawn's recent behavior suggests she'd uncovered something significant-working late, taking encrypted notes, making frequent calls from the office stairwell. Did something terrible happen to Dawn? And if so, who might be responsible-perhaps someone within Vixed itself?
Through emails with her friend Mia, we see Dawn's struggles at Vixed. Self-described as "naturally shy, like the turtles I love," Dawn faces constant dismissal from her supervisor Seth, who seems irritated by her meticulousness. Dawn becomes fixated on her cubicle neighbor Natalie, cataloging everything from her "perfectly highlighted hair" to her "effortless way of commanding attention in meetings." This admiration intensifies as Dawn watches Natalie's routines reflected in her computer screen. Her attempts to connect grow increasingly desperate - redecorating her cubicle to match Natalie's style, forcing herself to eat trendy foods, and interrupting meetings with turtle facts. Dawn creates spreadsheets of Natalie's schedule, repeatedly uses Natalie's name in conversations, and attempts unwanted physical contact that results in Natalie publicly telling her to "never fucking touch me again." The situation culminates when Dawn finds her desk vandalized - her plants toppled, glass turtle figurines smashed, and stuffed turtle cut open with ketchup arranged like blood. Seth dismisses her concerns, and Dawn's accusation about Seth's relationship with Natalie only isolates her further.
Detective Santoro uncovers troubling inconsistencies in Natalie's story. Phone records show calls to Dawn came from their office building, contradicting Natalie's claims. Her fingerprints appear on items in Dawn's kitchen she denies touching. Most damning, Dawn emailed HR before disappearing about "a hostile work environment" and "threatening behavior." The case intensifies when Dawn's body is found in nearby woods, beaten, her red glasses shattered nearby. A #VixedBullies campaign emerges with former employees sharing stories of Dawn being bullied, many specifically naming Natalie. The evidence becomes overwhelming when Natalie discovers a blood-covered ceramic turtle from Dawn's collection in her laundry hamper. Investigators uncover Dawn's emails documenting Natalie's bullying, security footage places Natalie's car near Dawn's apartment, forensics find Dawn's DNA in Natalie's trunk, and her boyfriend Caleb withdraws his alibi. Despite claiming innocence, Natalie is arrested during a charitable 5K race she organized - ironically dedicated to workplace violence awareness.
In a stunning twist, Dawn is actually alive, hiding in a motel with Caleb. They discuss the unidentified body police believe is Dawn's, knowing DNA testing will eventually expose the truth. Dawn shows Caleb a letter explaining how they avenged Mia's death. The truth emerges: Amelia "Mia" Hodge was Dawn's childhood best friend. Both were outcasts - Dawn for being "weird" and Mia for having cerebral palsy. In high school, Natalie and her friends tormented Mia, culminating in a cruel Valentine's Day prank involving Mia's crush. Two days later, Mia took her own life. Years later, Dawn partnered with Mia's brother Caleb to orchestrate revenge: Caleb dated Natalie while Dawn planted evidence framing her for murder - fake emails, the bloody ceramic turtle, and staging Dawn's house to suggest a struggle. With Natalie arrested and facing life imprisonment, Dawn believes they need a real corpse to ensure conviction. Despite Caleb's love for her, Dawn prepares to sacrifice herself by drowning with a cinderblock tied to her ankle.
After being bailed out, Natalie discovers Caleb and Dawn met in a grief support group for those who lost siblings to suicide. Caleb admits to the revenge plot but warns that Dawn has gone rogue-planning suicide to frame Natalie. Despite years of vengeance, Caleb's distress seems genuine. Natalie acknowledges her debt to both-Caleb for keeping her from jail, and Dawn for her role in Amelia's death. At Wollaston Beach, Natalie finds Dawn standing on an aging pier with a cinderblock tied to her ankle. Natalie reveals how she's honored Amelia's memory through counseling troubled teens and funding suicide prevention. She explains how Amelia's memory guides her major life decisions. Dawn begins to waver, especially when Natalie shares intimate details about Caleb-his nightmares, his sister's drawings, his devotion to Dawn. The breakthrough seems genuine until Natalie's phone reveals the body is Tara Wilkes, who had bullied Mia years ago. Dawn's expression shows not shock but satisfaction. Natalie realizes Dawn had expanded her revenge beyond her, eliminating another player in Amelia's tragedy.
One year later, Dawn and Natalie share an alliance built on secrets and self-preservation. Dawn has completed her first 5K, accepted Caleb's proposal, and now co-organizes the charity race with Natalie, complete with Mia's memorial poster and tribute t-shirts. Natalie views their engagement cynically while managing her relationship with Seth, whose divorce she orchestrated through anonymous threats. The charity race has raised $50,000-though Natalie still skims 15% through creative accounting. Their arrangement exists in unspoken terms. Natalie justifies her embezzlement as compensation for taking blame in Amelia's suicide. Their pact maintains perfect balance: Natalie guards the truth about Tara's murder while Dawn overlooks the missing funds. Each holds enough information to destroy the other. Watching Dawn with race participants, Natalie recognizes they're both predators behind different masks-Dawn as a community pillar, herself as a skilled manipulator. They've become each other's insurance policies, ensuring their secrets remain buried through their careful dance of deception.
This psychological thriller exposes our professional personas through Dawn's exhausting performance-researching friendship techniques, copying Natalie's desk arrangements, and rehearsing interactions to appear normal at work. Natalie, the office's golden girl, has perfected workplace deception. Her carefully cultivated image of organizing charity drives, remembering birthdays, and exceeding sales targets conceals her systematic embezzlement. Designer outfits and strategic empathy mask a calculated predator who views colleagues merely as pawns. The novel challenges us to question how well we know our coworkers. What secrets might the person in the next cubicle harbor? How easily might anyone justify terrible actions when convinced of their righteousness? Professional environments become perfect breeding grounds for revenge fantasies, where perceived slights justify devastating responses. The final image of Dawn and Natalie-dangerous women bound by mutual secrets and manipulation-reminds us that sometimes the most threatening people sit right beside us, smiling while planning their next move.